Coke oven



Dec. 30, 1924. 1,521,123

w. H. PAVITT COKE OVEN Filed May 5, 1922 2 Sheets-Sheet l :l E z E o y ,L l

ff, l/ f7 Dec. 30. 1924. 1,521,123

W. H. PAVITT COKE OVEN Filed May 5. 1922 2 Sheets-Sheet 2 CL- j+4* Cz Fiyi@ s@ 25 15 lll Patented Dec. 30, 1924.

UNITED STATES PATENT OFFICE.

WILLIAM H. PAVITT, 0F BEOOKLYN, NEW YORK, ASSIGNOR OF ONE-THIRD T0 LOUIS WILPUTTE AND TWO-THIBDS T0 ALICE A. WILPUTTE, BOTH 0F NEW ROCHELLE,

NEW YORK.

COKE OVEN.

Application led Hay 5, 1922. Serial No. 558,642,

To all whom t may concern:

Be it known that I, l/VILLIAM H. PAvrrr, a citizen of the United States, and a resident of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Coke Ovens, of which the following is a specification.

My present invention relates to coke ovens of the type in which the heating walls at the sides of the oven chambers or retorts are rovided with heating flues the walls of w ich are separate from masonry retaining walls between which and the oven chambers proper the lues are interposed. In this typeof construction, which is one commonly employed in horizontal flue coke ovens, the wall separating each adjacent pair of retorts comprises a. central section, which I shall hereinafter refer to as the supporting wall, and which may be regarded as forming a portion of the masonry framework of the oven battery, and separate flue containing sections, which I shall hereinafter refer to as heating walls, located one at each side of the supporting wall, and each such heating wall interposed betweenthe supporting wall and the adjacent coking chamber. The heating walls are sometimes hotter and sometimes colder than the supporting wall and this results in relative expansion and contractionof the supporting and heatn walls.

Largely as a resu t of this relative expansion and contraction and of the fact that the brickes forming the heating walls are. comparatively thin to facilitate the transmission of heat from the heating gases in the flue to the coal being coked, great diliiculty has heretofore been experienced from leaka e through the joints in the end portions o? the heating walls; and the primary object of my (present invention is to provide an improve construction of the end portions of the heating walls in a coke oven construction of the type referred to whereby leakage is wholly or largely avoided.

The various features of novelty which characterize my invention are pointed ont with articularity in the claims annexed to and orming a part of this specification. For a better understanding of the invention, however, and the advantages possessed by it, reference should be had to the accom'- panying drawin and descriptive matter in which I have illustrated and described a preferred embodiment of my invention.

Of the drawings:

Fig. 1 is a side elevation of a portion of a coke oven structure;

Fig. 2 is a partial section on the line 2 2 of Fig. 1; Y Fig. 3 is a partial section on the line 3 3 of Fig. 2;

Fig. 4 is a partial section on the line 4 4 of 1 and 2; and

Fig. 5 is a partial section on the line 5 5 of Fig. 4.

In the coke oven structure illustrated in the drawing, A represents the masonry skeleton or body of the coke oven structure which comprises horizontally elongated retorts B. Each adjacent pair of retorts B are separated by masonry comprising a central supporting wall C, which may be regarded as forming a portion of the masonry skeleton of the oven structure, and heating walls D one at each side of the supporting wall C, and each interposed between the latter and the adjacent retort. The opposite side walls of each retort B are thus formed by the two heating walls D which form linings, so to speak, for the two adjacent supporting walls C. Each heating wall D comprises side walls formed of compnratively thin bricks D', and D2, bricks D- formin the horizontal fille division walls. bricks 4 and D5 forming the top and bottom walls, respectively, of thc flue sparc. and bricks D forming the ends of tlnl iwaling wall.

n the well known horizontal flue system illustrated in the drawings, gas is supplied at one end of each of the horizontal lines D"r except the lowermost Hue, by a correspending gas supply pipe E which is inserted in a gas inlet passage E formed in the corresponding end brick D. Valves E2 or other regulating provisions are made for controlling the flow through the various gas inlets. Air for the combustion of the gas is introduced into the heating walls adjacent each gas inlet E' through a corresponding port C from an air supply channel Ca of which there is one formed at each end of the each supporting wall C, and each of which receives preheated air at its lower end from a recuperator or rcgencralor systemi from the constructions heretofore known,

however, in the shape and relative arrangement of the bricks forming' the ends of the heatings walls, and comprises a novel form j of metallic armor for the side walls of the oven structure, and provisions whereby this armor and the specially shaped and disposed bricks forming the ends portions of the heating walls cooperate to maintain tight joints in said walls.

As shown the heating wall end bricks D each comprises a tongue portion d and an enlarged vhead comprising shoulder portions d and d2 projecting laterally away from the tongue portion d. The tongue portions d of the bricks D extend between the bricks and D2.

D and D2 forming the sides of the hollow heating walls, and the shoulders d and 'Z2 abut against. the front edges of the bricks D j The shoulders d and d2 of each brick D6 extend laterally away from the tongue d distances less, respectively, than the `thickness of the bricks D and D2.

At each end of each heating wall D is lace a metallic flashplate or armor member lilwhich is held against lateral movement away from the correspondingT supporting wall C,vand has one flared side projecting beyond the corresponding end brlck shoulders d', and iittin against the flared or bevelled edges Ds o the corresponding bricks D. In consequence of the construction described, each armor member F, when 1n lace as shown in Figs. l and 4, not only hol s the end bricks D against the outer edges of the orthe bricks Dawa bricks D and D2 but also holds the heating wallD against the supporting wall C with a wedging action and thus prevents any spreading movement of either the bricks D from the interposed tongue portion d of t e bricks D. Preferablys as Shown, the tlashplate members F are trough-shaped, and each comprises in addition; to` the side F a similar oppositely `:flared side F2 which projects beyond the :positively holds the bricks D and D2 snugly against the tongue portions d of the bricks D. 4

YThe .provisions shown for holding the armor member F against movement away from the correspondin central su porting wall C comprise adjusta le wedges interposed between the member F and bracket arms H secured to the oven buckstays H. As shown the oven buckstay H at each end of the supportin wall C comprises a pair of channel bars w ich are bolted together and to which the brackets H are secured. Interposed between each buckstay and the adjacent end of the supporting wall C is a Hash late K a. little narrower than the wall against which it is placed. The two armor members F at the opposite sides of each end of each coking chamber B are spaced apart by interposed top lintel members L which ma be formed and connected to the armor mem ers F in a known manner. At the lower end the two members F at the opposite sides of the cokinv chamber may be spaced apart by the metal ic floor sill members M. In lieu of or in addition to the described means for spacing the opposed members F apart, and thereby holding the ends of the heating walls D against the adjacent retainin walls C, other means may be employed for olding the armor members F against movement away from the adjacent retaining walls. Special provisions for this purpose are not really required however to maintain tight joints between the bricks D' and D2 and the bricks D", when the members F are of the preferred construction illustrated, since with this construction, the bricks D and D2 are held by the sides F and F2 snugly against the tongue portions d of the bricks D, thus insuring tight joints.

Advantageously the outer edges of the sides F of the armor members F are so shaped relative to the metallic framework or rim of the corresponding coke oven door I as to provide a suitable space for luting material N sealing the joints at the mar in of the door when the latter is in place. dvantageouslgalso the adjacent edges of the lashplatcs and armor members F are shaped to provide a space for luting material O, which revents leakage of air into or gases out of t e oven passages or channels through the adjacent brickwork joints. The horizontally elongated character of the joints between the bricks D and the bricks D and D2, as well as the fact that in the preferred construction illustrated the sides F and F2 of the members F cover the outer edges of these joints contributes to the avoidance of objectionable leakage. Advantageousl as shown, the doors I are provided with ocking bars working in slotted brackets carried ly the door and engaging inclined shouldersformed at the ends of corresponding bracket arms H. The gas piping E supplying gas to theburner nozzles E are branches from the gas supply main E, these branches extending upward at the sides of the bucksta s and assing through apertures provi ed for t e purpose in stiflening rib portions of the bracket arms H.

While in accordance with the rovisions of the statutes I have illustrate and described the best form of embodiment in my invention now known to me, it will be apparent to those skilled in the art that changes may be made in the form of apparatus disclosed without departing from the spirit of my invention as set forth in the appended clalms, and that in some cases certain features of my invention ma be used to advantage without a corresponding use of other features.

Having now described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. In a coke oven of the type in which a central supporting wall and separate holf low heating walls at opposite sides of the of the sup su porting wall are interposed between each a jacent pair of coking chambers, the improvement which com rises la metallic armor member at the en of each heating wall and en agin the end and louter side wall bricks t ereo and means holding each of said armor members against movement awily from the adjacent central supporting wa 2. In a coke oven, the combination comprisin acentral supporting wall and separate ollow heating walls at o posite sides rtin wall and gorming the adjacent s1 e wal s of an ad'acent pair of coking chambers, and a metallic armor member at the ends of each heating wall engaging the inner and outer side wall bricks thereof with a wedging action to prevent their separation.

3. In a coke oven of the type in which a central sup orting wall and separate hollow heating wa s at opposite sides of the supporting wall are interposed between each adjacent pair of coking chambers, the improved heating wall end construction comprising inner and outer side wall bricks, end wall bricks comprising tongue portions interposed between the side wall bricks, a trough shaped metallic armor member at the end of the heating wall with side portions engaging the side wall bricks and holding them against said interposed; tongue portions, and means for anchoring said armor members in place.

4. In a coke oven of the type in which a central sup orting wall and separate hollow heating wa ls at opposite sides of the supporting wall are interposed between each adjacent pair of coking chambers, the improved heating wall end construction comprising inner and outer side wall bricks, end wall bricks com rising tongue portions inter osed between t e inner and outer side wall ricks, a trough shaped metallic armor member at the end of the heating wall with side ortions engaging the side wall bricks and olding them against said interposed brick portions, and means for holding said armor member in fixed relation to the adjacent supporting wall.

5. In a coke oven of the type in which a central supporting wall and separate hollow heating walls at opposite sides of the supporting wall are interposed between each adjacent pair of cokin chambers, the combination with the brics forming the inner and outer side walls at each end of each heating wall, of bricks at the end of the heating wall comprising tongue rtions inte osed between said mner an outer side wa bricks, a trough shaped metallic armor member at each end of each heating wall comprising side portions engaging the corresponding inner and outer s1de wall bricks, a metallic armor member anchored against each end of each central supporting Wall, and mechanical connections between the armor at each end of each su porting wall and the adjacent trough shaped) armor members at the ends of the heating walls.

Signed at New York in the county of New York and State of New York this 4th day o'f May A. D. 1922.

WILLIAM H. PAVITT.

CERTIFICATE 0F CORRECTION.

Patent no. 1,521,125. December 5o, 192A.

WILLIAM E. PAVITT.

It: la'hexey certified that error appears in the above numbered patent requiring corrections: follows: In the grnt, line 15, strike out the name and "um "william H. Pav1tt`, and that the said Lettere Patent/should be 'reed with-this corretion therein that the same may conform to the record ot the cue in the Patent Office.

Signed and smiled.` this 18th day-of March, A. D. 1914.1.

` Henry Van Ax-sdale, (Sell) Acting comiuionar of Patents. 

